Need help from a math expert.

[twindouble]

Here the problem, I've got what I thought was a 250 gal oil tank and my oil man pumped in 275 gal and I had about 1/4 of tank left.


Here's the measurements of the tank. It's a cylinder, these are outside measurements. 64" long by 35 1/2 " in circumference and the tank is 3/8" thick. What would it hold full?

Thanks,

T.D.

[twindouble]

ignore that first post; see why I need help. :blush:



Here the problem, I've got what I thought was a 250 gal oil tank and my oil man pumped in 275 gal and I had about 1/4 of tank left.


Here's the measurements of the tank. It's a cylinder, these are outside measurements. 64" long by 35 1/2 " in diameter the tank is 3/8" thick. What would it hold full?

Thanks,

T.D.

[Achilles]

If your measurements are correct, the tank holds about 262 gallons, assuming no interior partitions or other things that take up space.

[JustRalph]

if 275 was 3/4ths of the tank.........then multiply 275 X .25

equals 68.75 plus the original 275 you put in ..........343.75

Probably actually a 350 gallon tank. Sound right?

remember........you never want to use the stuff at the bottom of the tank. That is where all the debris and particulate accumulates. You don't want to pump that into your furnace.........another piece of advice. change all filters often.

[twindouble]

If your measurements are correct, the tank holds about 262 gallons, assuming no interior partitions or other things that take up space.

Thanks, don't know if there's any partitions but I could be wrong on the thickness of the tank, the only way to measure it is to remove the guage, if I were off by 1/4" on the thinkness, it could be a 275 gal tank, the other measurement are right on. Either way he couldn't get 275 gal in it if the guage is correct, it would of had to be close to empty. Correct?

[Achilles]

Volume of a cylinder in cubic inches = 3.14 (Pi) X radius squared X height. Subtract twice the thickness of the tank from both the diameter and the length (I forgot to do it for the length in my post above) to get the interior dimensions. Then do a google search on "convert cubic inches to gallons".

[Achilles]

I'd complain to the oil company. Don't they need (by law) to have their measuring equipment calibrated and on file somewhere?

[twindouble]

I'd complain to the oil company. Don't they need (by law) to have their measuring equipment calibrated and on file somewhere?

This tank is a relic, I changed oil CO. three years ago and he never measured it that I know of.

[Tom]

Calibration records for the delivery equipement are madatory - traceable standards. Ask to see the records - if they refuse, you go straight ot a lawyer.

I had a guy from my office beat a speeding ticket -he asked to see the calibration records of the radar gun. They were up to date. I suggested he ask to see the calibration records of the tuning fork used to calibrate the gun, Bingo! Outdated calibration - no leg to stand on for the ticket.

[kenwoodallpromos]

1 gallon [US, liquid] = 0.8326742 gallon [UK]

[BillW]

Here's something for you guys to bookmark:

http://www.wolinskyweb.net/measure.htm

[twindouble]

Here's something for you guys to bookmark:

http://www.wolinskyweb.net/measure.htm

Thanks Bill, Achilles was correct in his calculations, not that I doubted him, I just wanted to see if I could do it. :faint:

[Achilles]

I went to that website, but I think it's incomplete. I saw no conversions for furlongs per fortnight nor megatons per acre. ;)

Thanks for the link anyway; it's a good one.

Achilles

[BillW]

I saw no conversions for furlongs per fortnight . ;)

Thanks for the link anyway; it's a good one.

Achilles

Funny, I actually thought of posting a furlong/fortnight conversion seperately for completeness when I put up the link. :lol:

[highnote]

Calibration records for the delivery equipement are madatory - traceable standards. Ask to see the records - if they refuse, you go straight ot a lawyer.

I had a guy from my office beat a speeding ticket -he asked to see the calibration records of the radar gun. They were up to date. I suggested he ask to see the calibration records of the tuning fork used to calibrate the gun, Bingo! Outdated calibration - no leg to stand on for the ticket.


Tuning fork? That's a good one. I'll have to remember that. Thanks. Few things I hate more than speeding tickets!

[FORGO]

It's not your tank its his meter that needs to be recalculated. Either it was reset to make more money for the oil company or the meeter has gone bad. Ask company for a rebate. Because something is not right. With big money to be made know in shorting people more oil companys will try it.
FORGO Retired Oil company Engineer.;)

[twindouble]

It's not your tank its his meter that needs to be recalculated. Either it was reset to make more money for the oil company or the meeter has gone bad. Ask company for a rebate. Because something is not right. With big money to be made know in shorting people more oil companys will try it.
FORGO Retired Oil company Engineer.;)


Thanks FORGO, in an e-mail I expessed to Achilles I wanted to be sure I knew what was going on before I kick up a stink. Going to replace the gage on my tank, now that I'm sure of the size of it then wait for another delivery. If I have them dead to rights they will have to make it right. The filler pipe is only about 2 1/2 feet to the tank, wouldn't hold that much.

[NoDayJob]

35.5 dia - .75 = 34.75 inside dia.

64 len - .75 = 63.25 inside len.

1 gallon = 231 cubic inches approx.

59987.346 = total cubic inches capacity approx. / 231 = 259.68548 gallons approx.

(pi * radius squared) = (3.14159 * 301.89062) = (948.41655 * 63.25 = 59987.346 / 231) = 259.68548 gallons approx.

Sounds like your company has a faulty meter if the measurements are correct.

NDJ [AKA Troll #1]